Battle of Porto di Santa Lucia

The Battle of Porto di Santa Lucia (1502) was a naval battle of the Italian War of 1499-1504 that was fought between the assassin Ezio Auditore da Firenze and a Borgia fleet off the coast of Naples' Castel Dell'Ovo. The battle resulted in the destruction of the four Borgia warships moored in the harbor.

History
In 1502, after assassinating the Papal overseer Addo Prete, the assassin Ezio Auditore da Firenze discovered the location of Leonardo da Vinci's prototype "naval cannon". Auditore discovered that the prototype naval cannon was stored at the Castel Dell'Ovo in Naples, and he succeeded in infiltrating the castle. He stealthily assassinated Borgia guards on the docks as he moved to encounter Eduardo, the architect behind the creation of the cannon. Eduardo voluntarily joined Auditore, as he was not paid enough, and he sought to stop Cesare Borgia from conquering Italy with his new inventions. Auditore managed to follow Eduardo as he rowed his gondola through the waterways inside of the castle, with the guards opening the gates; Ezio alternated between free-running on ceiling supports and stealthily diving and swimming. When he reached the room with the prototype naval cannon, he proceeded to slay its guards and commandeer the boat. Auditore then decided to turn the naval cannon against the Borgia warships moored in the harbor of Naples, and he sunk four Borgia ships by shooting their sails with his flammable cannonballs from the cannon. His versatile craft dodged the cannon bombardments from the Borgia ships and sunk all four of them, causing their burning crew members to jump into the water and drown, rather than burn alive. After sinking the Borgia ships, Ezio turned the cannon around and fired at the war machine, diving into the sea before the weapon exploded. Auditore proceeded to return to Rome, having sabotaged Borgia's weapons of war.